2008 PORSCHE 911 GT2 Information Manual

· 53 · · 52 ·
The 911 GT2 |Chassis
The steering system is extremely
direct and provides detailed
feedback from the road. This
high level of precision is very
advantageous in both racing and
normal road use. Thanks to the
precise front-axle kinematics andthe variable steering ratio, the
car responds to every movement
of the wheel.
An important feature of the
steering system is the variable
ratio gearing. Around the straight-ahead position, the ratio
is less direct, enabling smoother
manoeuvres, such as during
motorway driving. There is less
risk of excessive steering inter-
vention destabilising the car at
high speed. Naturally, the systemprovides excellent feedback as
well as the usual agility. As the
wheel is turned harder, the ratio
becomes more
direct and the
steering more responsive. This
variability is
particularly beneficial
in low-speed hairpin bends. The
energy-absorbing steering column
is a key safety feature since, in
the event of a front-end impact, it
enables a deformation path of
100 mm.The intermediate steering shaft is
made from aluminium, while the
protective tube and steering lock
housing are die-cast magnesium.
The standard three-spoke GT2
steering wheel features manual
height and reach adjustment.
Used in conjunction with the seat
adjustment options, it enables
every driver to find the ideal seat-
ing position.
Maximum precision, however powerful the performance.
Steering.

Safety
Uncompromising performance
is nothing without safety.

· 57 · · 56 ·
The 911 GT2 |Safety
The 911 GT2 excels in every
respect, be it power, driving
dynamics or safety. Every aspect
of its lighting concept, braking
system, rigid body and ergonomic
interior is fine-tuned to its
performance and to the individual
driver. For example, the sportbucket seats (see page 72) with
folding backrest offer racecar-like
lateral support.
Lighting system.
The standard lighting system
on the 911 GT2 uses the latest
Bi-Xenon gas-discharge technology
to achieve a light quality similar
to daylight. The compact main
headlights provide a broad and
uniform swathe of light that
increases active safety in all
road scenarios and in long,
blind corners in particular.
The brightness of the gas-discharge
system featured in the Bi-Xenon
headlights is approximately double
that of conventional halogen units.
A headlight cleaning system is also
included as standard.
The horizontal indicators in
the outer front air intakes use
high-performance light-emitting
diodes (LEDs) to increase
brightness and visibility.
The high-level third brake light
at the base of the rear screen
is equipped with rapid-response
LEDs.Two additional lights on the inside
of each door offer added conveni-
ence and safety. The kerb light
(white) provides useful illumination
when stepping out of the car.
The safety light (red) warns traffic
approaching from the rear when
the door is open.
Bi-Xenon headlightsHigh-level third brake light
A must: absolute confidence in the safety of your car.
Active safety.

· 59 · · 58 ·
The 911 GT2 |Safety
The 911 GT2 is equipped as
standard with the Porsche
Ceramic Composite Brake (PCCB)
that has already demonstrated
its performance credentials on
the racetrack, for example, in the
vehicles of the Porsche Mobil 1
Supercup.only much harder than metal, it
is also more resistant to heat.
Even at high temperatures, the
thermal resistance of the PCCB
disc ensures exemplary dimen-
sional stability. The ceramic
material is totally resistant to
The large disc diameter (380 mm
front and 350 mm rear) adds sig-
nificantly to brake performance.
The ceramic discs are made from
a specially treated carbon-fibre
compound that is silicated in a
high-vacuum process at 1,700 ºC.
The material thus produced is notcorrosion and offers excellent
acoustic damping properties.
The pads are mounted in six-piston
monobloc aluminium fixed calipers
at the front, with four-piston units
at the rear. The resulting brake
forces are not only extremely
high, they are also exceptionally
consistent. The pedal response
is fast and precise with only
moderate input required.
PCCB enables shorter braking
distances in even the toughest
road and race conditions. Excel-
lent fade resistance ensures
greater balance when slowing
from racetrack speeds.
The key advantage of PCCB is
the total weight saving of approxi-
mately 50 % over comparable
metal discs. The mounting bells
on both front discs are made
from weight-saving aluminium. As
well as enhancing performance
and fuel economy, there is a major
reduction in both the unsprung
and rotating masses. This, of
course, improves comfort and
road-holding on uneven road
surfaces as well as general
handling and agility.
Please note that circuit racing,
trackday use and other forms of
performance driving can signifi-
cantly reduce the service life of
even the most durable pads and
discs. As with conventional high-
performance braking systems,
we recommend that all brake
components be professionally
inspected and replaced where
necessary after every track event.
Porsche Ceramic Composite Brake (PCCB)
When it comes to brake technology, we demand nothing but the best.
Porsche Ceramic Composite Brake (PCCB).

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The 911 GT2 |Safety
Bodyshell structure.
The 911 GT2 complies with all
statutory requirements worldwide
in respect of frontal, side,
diagonal and rear impact
protection.
The reinforced bodyshell contains
a highly resilient passenger
cell offering exceptional crash
protection. At the front of the
car, the cell is protected by a
patented system of longitudinal
and transverse members (1). In
the event of an accident, energy
is absorbed by three separate
load paths, one above the other,
which disperse the force of
impact and minimise deformation
of the passenger cell.
Additional features include an
extremely rigid bulkhead cross-
member (2) made from super
high-strength steel. This element is
designed to absorb impact forces
from the longitudinal members and
thus protect both front footwells. In
a minor collision, a system of easily
replaceable impact absorbers
(3) prevents costly damage to the
underlying bodyshell structure.
The reinforced doors (4) make
an increased contribution to
the overall rigidity of the car. An
additional load path (5) is used tochannel energy through the upper
part of the shell and thus further
protect the passenger cell.
In 1985, we began using super
high-strength steel elements
inside each door to increase side
impact protection. On the 911 GT2,
this integral reinforcement
is made
from tough yet lightweight
aluminium. By increasing the
proportion of aluminium alloys
and high-strength steel, we’ve
also improved the power-to-weight
ratio. In all, approximately 20 %
of the 911 GT2 is made from
aluminium.Another important but perhaps
less obvious safety feature is the
high-quality surface protection.
More than 30 years ago, we
became the first manufacturer in
the world to use a hot-dip gal-
vanised steel shell. This exacting
process is fundamental to thelegendary durability of our cars. It
also ensures a consistently high
standard of crash protection, even
after many years on the road.
Sheet steel
Tailored blanks
High-strength steel
Super high-strength steel
Aluminium
Intelligent crash technology.
Passive safety.

· 63 · · 62 ·
The 911 GT2 |Safety
Porsche Side Impact Protection
(POSIP).
The 911 GT2 is equipped as
standard with the latest generation
of Porsche Side Impact Protection
(POSIP). It features two additional
airbags for each front seat: a
head airbag located in each door
and a thorax airbag in the folding
Porsche Side Impact Protection (POSIP)
The airbag control unit is located
in the centre tunnel where it
receives additional information
from a pair of impact sensors
near the headlights. This arrange-
ment allows faster and more
accurate crash evaluation and
thus better airbag deployment.Airbags.
The 911 GT2 has a specially
developed airbag technology
with a total of six airbags. The
full-size front airbags have a two-
stage inflation function which
deploys each airbag separately in
accordance with the force and
nature of the impact (e.g., frontal
or diagonal) before inflating each
airbag accordingly. In a low-speed
crash, the airbag is only partially
inflated, thereby minimising
discomfort to the occupants.
backrest on each of the standard
sport bucket seats (see page 72).
As well as offering exceptional
support, the sport bucket seat
provides a much higher level of
safety than conventional bucket
seat designs.
The thorax and head airbags each
have a volume of approximatelyeight litres, providing high protec-
tion in the event of a side impact.
Another important element of
POSIP is the side impact protection
with door reinforcement.
Other safety features of the
911 GT2 are head restraints that
are an integral part of each seat,
an energy-absorbing steering column, three-point seat belts
with height adjustment, seat-belt
pre-tensioners and force limiters,
energy-absorbing elements in the
dashboard, and flame-retardant
materials throughout the interior.

· 65 · · 64 ·
The 911 GT2 |Safety
Clubsport package.
A ‘Clubsport’ racing package
is available as a no-cost
option for the 911 GT2, offering
added protection for racetrack
use.
Included with the package are a
bolt-in rear roll cage behind thefront seats, a six-point racing har-
ness in red for the driver’s side,
a fire extinguisher with mounting
bracket and a preparation for
a battery master switch. This is
available separately from the
Porsche Motorsport department,
as is the front roll cage element
required for FIA-approved racing
events.The sport bucket seats with
thorax airbags are covered with
flame-retardant material.

Comfort
Exceeding expectations.
Comfortably.